The mH-SU24 or mH-SU50 power supply unit is used to power system components supplied with 24V DC. In practice, one mH-SU24 unit is sufficient for a small system, a single mH-SU50 unit is recommended for a large system. For safety reasons, it is recommended to use the mH-SP filter module and the B6A overcurrent circuit breaker in the power supply circuit. The module is installed in the switchgear and takes up a field of 3 modules (mH-SU50: 6 modules). The unit has electronic protection against short circuit and overheating. 24V line protection is not required.